Portable or semiportable steam-engine



K. HEILMANN. PORTABLE 0R SEMIPORTABLE STEAM ENGINE.

APPLICATION FILED OCT. 17, 19l9.

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Patented Mar. 22, 1921.

K. HEILMANN PORTABLE 0R S EMIPORTABLE STEAM ENGINE. APPLICATION FILED 00117, 1919.

1,372,430, Patented Mar. 22, 1921.

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MAGDEBURG- -BUCKAU, GERMANY, ASSIGNORTO R. WOLF Anrmnsnsnmscnnr'r, or iunsnnnnnennonau, GERMANY, A conronn- TION or GERMANY.

PORTABLE R SEMIIPORTAIBLE STEAM-ENGINE.

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Specification of Lettersiatent.

Patented Mar. 22, 1921.

Application filed October 17, 1919. Serial No. 331,470.

To aZZ whom it may concern:

Be it known that I. KARL Hnrnininu, a citizen of Germany, residing at Magdeburgliuckau, Germany. have invented certain new and useful Improvements in Portable or tieniiportable Steam-Engines: and I do here by declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in portable or semi-portable steam 6119511168, and the object of the improvements is to provlde a portable or semi-portable steamcngme m which the engine is so mounted on the boiler, that it is independent of the e xpan sion of the boiler by heat. With thls ob ject in view my inventioirconsists in providing a portable or semi-portable steam engine in which the engine is supported with one part independently of the boller and on the foundation thereof. while it is supported with another part of the boiler and through a bearing member having an inclined bearing face which by its inchnation renders horizontal and vertical expansion of the boiler ineffective as to the position of the engine. A further obiect of the improve ments is to mount the engine in such a way that the forces caused bv the reciprocatlng masses, such as the piston and the crank mechanism. are not transmitted to the foundation through the part which is directly supported on the foundation. but through the boiler. With these and other objects in view my invention consists in the matters to be described hereinafter and particularly pointed out in the appended claims.

For the purpose of explannng the 1nvcn tion an example embodying the same has been shown in the accompanying drawings, in which the same letters of reference have been used in all the views to indicate corresponding parts. In said draw1ngs.-

Figure l, is a side view of the nglne,

Fig. 2, is a vertical cross-section taken on the line 22, of Fig. 1,

3, is a detail view showing the connection between the boiler and engine through which the forces caused by the reciprocating masses are transmitted to the boiler,

Fig. 4, is a side view of rig. 8, and

Fig. 5, is a detail view showing a modification of the inclined bearing for supporting the engine on the boiler.

Referring to the example illustrated in the drawings, the portable or semi-portable steam engine consists of a boiler a, which is supported on a foundation 0 by means of shoes 0 and Above the boiler a. steam engine is located which as shown consists of a cylinder (3, a frame 0, a bearing plate f to which the frame is secured, the crank mecln anism (not shown), and the crank shaft g. The shoes 0 are located vertically below the crank? shaft,' and the bearing plate is rigidly connected with the shoes 0. by means of uprights it made from sheet metal or ii constructed of steel bars.

At its rear end the engine is supported on the boiler a. As shown in Fig. 1, the cylinder (J is formed at its rear end with shoes a and to the top of the boiler a bearing plate j is secured. The contacting bearing faces of the shoes 2' and the bearing plate fare inclined downward and toward the rigid connection of the engine to the shoes 0 and the angle of inclination is such that in case of horizontal and vertical expansion of the boiler by heat the points of the bearing plate j, for example the point B is shifted in the direction of the bearing face and into the position B, and a point D into the position D, so that the expansion of the boiler by heat has no influence on the position of the engine, provided that the boiler is rigidly secured at it, and that the 1611- gitudinal expansion of the boiler is proportional to the length A B and the vertical expansion to the length C B. In this case the point B is shifted in the direction A P) and into the position B. In Fig. 5 I have shown a modification in which a roller 9% is interposed between the inclined bearing members.

The steam engine is constructed in the form of a system in which the pressures from the crank mechanism are centrally taken up by the frame and are not transmitted to the boiler.

Preferably the forces caused by the re ciprocating masses are not transmitted to the uprights h and [i but to the boiler. For this purpose sheet metal links Z, Z are setion, so

cured; to the boiler whichengage'the hearing plate f with their front and rear ends, as is shown in Figs. 3 and 4. The said links 7 are disposed in the plane of the forces of the movable members ofthe engine, and they are located vertically above the points Where the boiler shoes are secured to the foundathat the forces caused by the reciprocating masses are transmitted to the foundation within the planes in which they are produced.

' In the example shown in Fig. 1 angle bars 77 n" are secured to the top of the boiler in lieu of the linlrsZ, Z and the said angle bars engage guide faces provided at the front and rear sides of-the plate Thereby longitudinal displacement of the plate 7' by the forces of the masses is avoided. Similar means are provided to lock the plate as againsttransverse C isplacement.

I claim:' V

1. In an engine of the class described, the combination with the boiler, of a steam engine mounted on-said boiler and having one part non-shiftable and another part which is connected with the non-shiftable part shiftable relatively to the boiler, and hear ing members intermediatethe boiler and the shiftable part arranged to render expansion of the boiler longitudinally and transversely of the engine inefiective as against the position of the shiftable part.

2. In an engine of the class described, the combination with the boiler, ot a steam engine mounted on said boiler and having one part non-shiftable and another part whirh is connected with the non-shittable part shiftable relatively to the boiler, and hearing members intermediate the boiler and the shiftable part having their bearing tacos inclined toward the boiler and the nonshittable part.

In an engine of the class described, the combination with the boiler secured to a foundation, of a steam engine mounted on said boiler and having one part non-shitable and another part which is eonnertml with the non-shiftable part shiitable rela tirely to the boiler, and links located in the plane in which the forces of the movable r 

